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  <section id="the-leonine-world">
<h1>The Leonine World<a class="headerlink" href="#the-leonine-world" title="Permalink to this heading">¶</a></h1>
<p><strong>Leonine</strong> refers to Leo’s unique way of organizing data and programs. This has many implications:</p>
<p><strong>Browsing</strong>: Leo remembers your outline organization. Class browsers don’t. Doh!</p>
<p><strong>The big picture</strong>: Outline nodes hide messy details, revealing the big picture <em>at all times</em>.</p>
<p><strong>Programming</strong>: Leo outlines naturally organize programs into modules, classes and functions. Leonine sources are their own design document. How you organize outlines is a choice in a new design space.</p>
<p><strong>User-defined types</strong>: Headlines naturally describe a node’s contents: <strong>headlines naturally define types</strong>. Leo’s core supports types such as &#64;button, &#64;rst, &#64;url, etc. Plugins define &#64;bookmark, &#64;graph, &#64;html and &#64;task types. Scripts can easily define other types.</p>
<p><strong>Work flow</strong>: The <a class="reference external" href="tutorial-basics.html#clone-find-commands">clone-find</a> commands gather all match a pattern under a single node. No need to keep searching for them. You can change the clones, and the original nodes change as well. This is a great way to fix bugs or to write books.</p>
<p><strong>Databases</strong>: Leo’s clones create new opportunities for scriptable databases. In my brother Speed’s outlines, suboutlines <em>are</em> SQL queries!</p>
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